Sash

Abstract

To provide a sash with improved strength of a paper sliding door against the load in the out-of-face direction without increasing the size of the paper sliding door.SOLUTION: A sash 100 includes: a rectangular outer frame 1; and a pair of paper sliding doors S fitted inside the ring of an outer frame 1 slidably in the width direction as a double sliding sash. With the paper sliding door S closed, the paper sliding door S has a pair of face materials 25, 35 and a pair of door stop stiles 20A, 30A which are fixed outside the width direction on the perimeter of the face material 25, 35. The outer frame 1 has ribs 11a and 12b extending inward from the sides of the outer frame 1. In a view in the depth direction of the outer frame 1, the ribs 11a, 12b and front door stop stiles 20A, 30A overlap, and the ribs 11a, 12b extend beyond the center lines G1, G2 of the door stop stiles 20A, 30A in the width direction of the outer frame 1.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a sash.

Background Art

[0002] Patent Document 1 describes a fitting. This fitting is a so-called sash, and includes a frame body, and a shutter composed of two shutters, an outdoor shutter and an indoor shutter, which are housed inside the frame body. The frame body is framed in a rectangle by a top frame, a bottom frame, and left and right vertical frames, respectively, and is attached to an opening of a building body. The shutter has an upper frame, a lower frame, a door end frame, an outer calling frame, and an inner calling frame. The outer part of the vertical bar of the frame body in the prospective direction slightly extends inward in the finding direction. In the view in the prospective direction, a part of this extended part overlaps with the door end frame. The overlapping part in the extended part is less than 50% of the width of the door end frame in the finding direction.

[0003] As described above, although the conventional sash has a structure in which a part of the end of the shutter on the outer side in the finding direction fits into the groove-shaped part of the window frame in the closed state, the overlapping part between the groove-shaped part and the end of the shutter in the view in the prospective direction is very small, and most of the frame of the shutter on the outer side in the finding direction, for example, is exposed.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In a sash, it is required that the shoji can stand on its own against a load in the out-of-plane direction (the same as the outside in the expected direction). Also, it is required that no deformation such as torsion occurs against this load. Therefore, the shoji is required to have a predetermined strength. However, if the strength is to be improved, there is a problem that the frame becomes thick and the size increases, etc.

[0006] The present invention has been made in view of such a situation, and its object is to provide a sash that improves the strength of the shoji against a load to the outdoor side without increasing the size of the shoji.

Means for Solving the Problems

[0007] The sash according to the present invention for achieving the above object is a rectangular window frame, and a pair of shoji that are fitted inside the ring of the window frame and slide in the finding direction to be drawn apart, in a state where the shoji are closed, the shoji has a face material and a door stop frame fixed to the outside in the finding direction on the outer periphery of the face material, the window frame has ribs extending inward from the side portions of the window frame, in a view in the expected direction of the window frame, the rib and the door stop frame overlap, the rib extends beyond the center of the door stop frame in the finding direction of the window frame.

[0008] The sash according to the present invention further in a view in the indoor side direction in the expected direction of the window frame, the door stop frame may be completely overlapped with the rib and hidden.

[0009] The sash according to the present invention further in a view in the expected direction of the window frame, the end of the rib on the inner side in the finding direction and the end of the door stop frame on the inner side in the finding direction may overlap.

[0010] The sash according to the present invention further The door stop frame of the outer screen of the pair of screens may overlap with the rib when the outer screen is closed.

[0011] The sash according to the present invention further comprises: The door stop frame of the inner screen of the pair of screens may overlap with the rib when the inner screen is closed.

[0012] The sash according to the present invention further comprises: The rib includes an outer rib and an inner rib that overlap the door stop frame of the inner sash in the expected direction, The inner rib is disposed inwardly of the outer rib in the projection direction, When the inner screen is closed, the outer rib and the inner rib may overlap in the forward direction.

[0013] The sash according to the present invention further comprises: When viewed toward the inside of the room in the expected direction, the inner rib may be completely overlapped with and hidden by the outer rib. Effect of the Invention

[0014] To provide a sash having improved strength against a load toward the outside of a room without increasing the size of the sash. [Brief description of the drawings]

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Embodiments for Carrying Out the Invention

[0016] Based on the drawings, the sash according to the embodiment of the present invention will be described.

[0017] The sash described below is adopted as one of the building materials of a building such as a multi-story house having a steel frame structure, for example. The building in which the sash described below is adopted may have a reinforced concrete foundation, a frame structure composed of frame members such as columns and beams, and panels forming walls and floors, and may be composed of an upper structure fixed to the foundation. The frame members and panels can be standardized (standardized) in advance. In this case, the frame members and the like can be manufactured in a factory in advance and transported to the construction site to assemble the building.

[0018] (Explanation of the outline) As shown in FIG. 1, the sash 100 according to this embodiment is used by being attached to the wall portion 200 of a building. Note that FIG. 1 is a view seen from the outdoor side in the looking-in direction of the sash 100 attached to the wall portion 200. The looking-in direction is the same direction as the direction perpendicular to the wall portion 200 in the sash 100 when attached to the wall portion 200. In this embodiment, a case where the wall portion 200 is erected perpendicular to the ground is shown, and the looking-in direction is along the horizontal direction.

[0019] The sash 100 includes at least an outer frame 1 that is a rectangular window frame and a shoji S fitted inside the ring of the outer frame 1. The shoji S is slidable in the finding direction. The finding direction is along the horizontal direction with respect to the ground on which the building is installed and along the wall surface of the wall portion 200 in the sash 100 when attached to the wall portion 200. The finding direction is orthogonal to the looking-in direction.

[0020] Hereinafter, for convenience of explanation, when simply described as indoor or outdoor side, it means the indoor side in the looking-in direction, and when simply described as outdoor or outdoor side, it means the outdoor side in the looking-in direction. The out-of-plane side or out-of-plane direction in the shoji S is the same as the direction facing the outdoor side or outdoor side in the looking-in direction. The description of viewing from the indoor side direction in the looking-in direction means the case of viewing from the outdoor side to the indoor side in the looking-in direction, and the description of viewing from the outdoor side direction in the looking-in direction means the case of viewing from the indoor side to the outdoor side in the looking-in direction.

[0021] Also, hereinafter, for convenience of explanation, the same direction as the finding direction may be simply described as the width direction. Also, when simply described as the inner side in the width direction, it means the direction facing the inside of the ring of the outer frame 1 in the finding direction, and when simply described as the outer side in the width direction, it means the direction facing the outside of the ring of the outer frame 1 in the finding direction.

[0022] Also, hereinafter, for the sake of convenience of explanation, in the outdoor-side view in the prospective direction, the left side in the width direction will be simply referred to as left or the left side, and the right side in the width direction will be simply referred to as right or the right side, etc. Also, the vertically upward direction will be simply referred to as up or the upper side, and the vertically downward direction will be simply referred to as down or the lower side.

[0023] The shoji S has a pair of outer shoji 2 and inner shoji 3. The inner shoji 3 is disposed on the indoor side of the outer shoji 2. The outer shoji 2 and the inner shoji 3 are slid in the finding direction and are separated. The shoji S, in the closed state, has face members 25, 35 and door stoppers 20A, 30A fixed to the outer portions in the width direction at the outer peripheral portions of these face members 25, 35. The outer frame 1 has ribs 11a, 12b extending inward in the width direction from the side portions of the outer frame 1. In the prospective direction of the outer frame 1, the ribs 11a, 12b and the door stoppers 20A, 30A overlap. And the ribs 11a, 12b extend beyond the center lines G1, G2 of the door stoppers 20A, 30A in the width direction. The following description regarding the positional relationship of each part in the shoji S will be made based on the state where the shoji S is closed, unless otherwise specified.

[0024] (Detailed description) FIG. 2 shows a cross section taken along the arrow II-II in FIG. 1, that is, a horizontal cross section of the sash 100 in the top view. As shown in FIG. 2, the sash 100 includes a rectangular outer frame 1 in the prospective direction view, an inner frame 4 which is a window frame fitted inside the ring of the outer frame 1 and fitted into the indoor-side portion of the outer frame 1, outer shoji 2 and inner shoji 3 as the shoji S fitted inside the ring of the outer frame 1, and a window frame heat insulating material 6 disposed so as to surround the outer periphery of the indoor-side portion of the outer frame 1. The outer shoji 2 and the inner shoji 3 are slidable in the width direction in a separated state inside the ring of the outer frame 1.

[0025] The outer shoji 2 includes a frame 20 having a rectangular shape in the prospective direction view and face members 25, 26 fitted inside the ring of the frame 20. The face members 25, 26 overlap in the prospective direction view, and the face member 26 is disposed on the indoor side of the face member 25. The face members 25, 26 are, for example, glass plates.

[0026] The frame 20 includes a door stop frame 20A that extends in the vertical direction and is the frame on the side close to the outer frame 1 in the width direction, an outer call matching frame 20B that extends in the vertical direction and is the frame on the side spaced apart from the outer frame 1 in the width direction, a lower frame 20C (see FIG. 3) that extends in the width direction and is disposed on the lower side, and an upper frame (not shown) that extends in the width direction and is disposed on the upper side. The frame 20 may be a frame body integrally formed, or may be formed by combining a plurality of frame members.

[0027] In the present embodiment, as an example, a case where the frame 20 is formed of an outer frame 21 made of a metal material such as aluminum or an aluminum alloy and an inner frame 22 made of a resin such as polyvinyl chloride (PCV) is exemplified. The outer frame 21 and the inner frame 22 are each a rectangular frame body. The outer frame 21 and the inner frame 22 may each have a hollow structure for improving heat insulation performance and reducing weight. The outer frame 21 is disposed on the outdoor side of the inner frame 22. The outer frame 21 and the inner frame 22 overlap when viewed in the prospective direction. The outer frame 21 and the inner frame 22 are integrally connected to form the frame 20. Generally, since the resin has a lower thermal conductivity than the metal material, by using the inner frame 22 as the indoor side of the frame 20, the heat insulation performance of the sash 100 (see FIG. 2) can be improved.

[0028] The inner window 3 includes a frame 30 having a rectangular shape when viewed in the prospective direction, and facing members 35, 36 fitted inside the ring of the frame 30. The facing members 35, 36 overlap when viewed in the prospective direction, and the facing member 36 is disposed on the indoor side of the facing member 35. The facing members 35, 36 are, for example, glass plates.

[0029] The frame 30 includes a doorstop frame 30A that extends in the vertical direction and is the frame on the side close to the outer frame 1 in the width direction, an inner summons frame 30B that extends in the vertical direction and is the frame on the side spaced apart from the outer frame 1 in the width direction, a lower frame 30C (see FIG. 4) that extends in the width direction and is disposed on the lower side, and an upper frame (not shown) that extends in the width direction and is disposed on the upper side. The frame 30 may be a frame body integrally formed, or may be formed by combining a plurality of frame members. The inner summons frame 30B overlaps with the outer summons frame 20B in the prospective direction view.

[0030] In this embodiment, as an example, a case is illustrated in which the frame 30 is formed of an outer frame 31 made of a metal material such as aluminum or an aluminum alloy and an inner frame 32 made of a resin such as polyvinyl chloride (PVC). The outer frame 31 and the inner frame 32 are each a rectangular frame body. The outer frame 31 and the inner frame 32 may each have a hollow structure for improving heat insulation performance and reducing weight. The outer frame 31 is disposed on the outdoor side of the inner frame 32. The outer frame 31 and the inner frame 32 overlap in the prospective direction view. The outer frame 31 and the inner frame 32 are integrally connected to form the frame 30. Generally, since the resin has a lower thermal conductivity than the metal material, by using the inner frame 32 for the indoor side of the frame 30, the heat insulation performance of the sash 100 (see FIG. 2) can be improved.

[0031] As shown in FIG. 1, the outer frame 1 includes a first vertical frame 11 and a second vertical frame 12 that are vertical frames on both the left and right sides of the outer frame 1, and an upper frame 14 and a lower frame 13 that are horizontal frames on the upper and lower sides of the outer frame 1. The outer frame 1 is fixed to the wall portion 200 along the wall surface of the wall portion 200. The outer frame 1 is fixed to the wall portion 200 with the outer peripheral portion embedded in the wall portion 200. The outer frame 1 may be formed by integrally forming these frames 11 to 14, or may be formed by integrally connecting separately formed frames 11 to 14. The outer frame 1 may be formed of a metal material such as aluminum or an aluminum alloy or a resin. The outer frame 1 may have a hollow structure for improving heat insulation performance and reducing weight. In this embodiment, a case in which the outer frame 1 is formed of an aluminum alloy is illustrated and described below.

[0032] As shown in FIGS. 2 to 4, on the upper surface of the lower frame 13, lower ribs 13a to 13c are formed which extend upward and extend along the extending direction of the lower frame 13. The lower ribs 13a to 13c are arranged in this order from the outdoor side to the indoor side in the prospective direction. Note that FIG. 3 shows a cross-section taken along the arrow III-III in FIG. 2. Further, FIG. 4 is a cross-sectional view taken along the arrow VI-VI in FIG. 2. In FIGS. 3 and 4, illustration of portions other than the cross-section (members visible in the depth direction of the arrow view) is omitted.

[0033] The lower rib 13a extends from the outdoor-side end of the lower frame 13. The lower rib 13b extends from the upper surface of the lower frame 13 on the indoor side of the lower rib 13a. The lower rib 13c extends from the upper surface of the lower frame 13 on the indoor side of the lower rib 13b. The lower rib 13b constitutes a rail L1 that serves as a guide for sliding the outer shutter 2 fitted in the outer frame 1 in the width direction. The lower rib 13c constitutes a rail L2 that serves as a guide for sliding the inner shutter 3 fitted in the outer frame 1 in the width direction. The lower rib 13a overlaps with the lower frames 20B and 30B in the prospective direction view.

[0034] In the present embodiment, a cover 5 formed of resin or the like is attached to a region on the upper surface of the lower frame 13 and sandwiched between the lower rib 13b and the lower rib 13c. At the outdoor-side end of the cover 5, a cover rib 5b is formed which extends upward and extends along the extending direction of the lower frame 13. The cover rib 5b is provided adjacent to the lower rib 13b on the indoor side of the lower rib 13b and constitutes the rail L1 together with the lower rib 13b.

[0035] Although not shown, guides such as rails or grooves for sliding the outer shutter 2 and the inner shutter 3 are also formed on the lower surface of the upper frame 14.

[0036] As shown in FIG. 2, at the outdoor-side end of the first vertical frame 11, there is provided a fin-shaped rib 11a that extends inward in the width direction (right side) and extends along the extending direction (vertical direction) of the first vertical frame 11. The rib 11a may be integrally formed with the first vertical frame 11 or may be attached and fixed to the first vertical frame 11. In the present embodiment, the case where the rib 11a is integrally formed with the first vertical frame 11 will be exemplified and described below.

[0037] In the perspective view, the rib 11a is spaced apart from the door stop frame 20A and overlaps with the door stop frame 20A. The rib 11a is located on the outdoor side of the door stop frame 20A. The rib 11a extends inward in the width direction beyond the center line G1 of the door stop frame 20A in the width direction. Note that the center line G1 generally approximately overlaps with the neutral line when a force in the perspective direction is applied to the outer or inner end of the door stop frame 20A in the width direction. Thereby, the strength of the outer barrier 2 against the load from the indoor side to the outdoor side (out-of-plane direction) can be improved. Also, from the viewpoint of fire prevention performance, the strength against the energy, force, and impact that deform the outer barrier 2 toward the outdoor side due to heat, hot air flow, and blast can be improved, and the fire prevention performance can be improved. Therefore, in order to improve the strength of the outer barrier 2 against the load to the outdoor side, it is not necessary to increase the size of the outer barrier 2 (for example, increase the size in the perspective direction). In this way, the outer barrier 2 can be made self-supporting against the load from the indoor side to the outdoor side, and the strength of the sash 100 is improved to the extent that deformation such as twisting of the outer barrier 2 can be prevented.

[0038] FIG. 5 shows a horizontal cross-section in a top view in the vicinity of the first vertical frame 11 (the left part of the outer frame 1) and the first vertical inner frame 41 (the left part of the inner frame 4). In the present embodiment, as shown in FIG. 5, the inner end 11t in the width direction of the rib 11a is positioned at the same position in the width direction as the inner end in the width direction of the door stop frame 20A, that is, the end 11t and the inner end in the width direction of the door stop frame 20A overlap in the prospective direction view, and the rib 11a extends. Note that, as shown in FIG. 6, the end 11t may be positioned between the center line G1 of the door stop frame 20A and the inner end in the width direction of the door stop frame 20A in the width direction, or, as shown in FIG. 7, may be positioned further inward in the width direction than the inner end in the width direction of the door stop frame 20A in the width direction. From the viewpoint of the design property when viewed from the outdoor side in the prospective direction, it is preferable that the rib 11a extends such that the end 11t is at the same position (see FIG. 5) as the inner end in the width direction of the door stop frame 20A or further inward in the width direction (see FIG. 6) in the width direction. That is, by forming the rib 11a in this way, in the view from the indoor side direction in the prospective direction, the door stop frame 20A completely overlaps with the rib 11a, and the rib 11a (outer frame 1) conceals the door stop frame 20A, so that the appearance of the sash 100 (see FIG. 1) when viewed from the outdoor side becomes neat.

[0039] As shown in FIG. 2, at the outdoor end of the second vertical frame 12, fin-shaped ribs 12a are provided that extend inward in the width direction (left side) and extend along the extending direction (vertical direction) of the second vertical frame 12. Further, at the inner side part in the width direction of the second vertical frame 12, fin-shaped ribs 12b are provided that extend inward in the width direction (left side) and extend along the extending direction of the second vertical frame 12. The ribs 12a and 12b may be integrally formed with the second vertical frame 12, or may be attached and fixed to the second vertical frame 12. In the present embodiment, the case where the ribs 12a and 12b are integrally formed with the second vertical frame 12 will be exemplified and described below.

[0040] In the prospective direction view, rib 12a is spaced apart from the door stop frame 30A and rib 12b, and overlaps with the door stop frame 30A. Rib 12a is located on the outdoor side of the door stop frame 30A. From the outdoor side to the indoor side in the prospective direction, rib 12a, rib 12b, and the door stop frame 30A are arranged in this order. That is, rib 12b is arranged on the indoor side in the prospective direction of rib 12a, and rib 12a and rib 12b are in the relationship of an outer rib and an inner rib. Rib 12a extends inward in the width direction beyond the center line G2 of the door stop frame 30A in the width direction. The center line G2 generally approximately overlaps with the neutral line when a force is applied in the prospective direction to the outer or inner end of the door stop frame 30A in the width direction.

[0041] In this embodiment, the rib 12a extends such that the inner end of the rib 12a in the width direction is at the same position as the inner end of the door stop frame 30A in the width direction, that is, the inner end of the rib 12a in the width direction and the inner end of the door stop frame 30A in the width direction overlap in the prospective direction view. The inner end of the rib 12a in the width direction may be located between the center line G2 of the door stop frame 30A and the inner end of the door stop frame 30A in the width direction in the width direction, or may be located further inward in the width direction than the inner end of the door stop frame 30A in the width direction in the width direction. From the perspective of the design property when viewed from the outdoor side in the prospective direction, it is preferable to extend the rib 12a such that the inner end of the rib 12a in the width direction is at the same position as or further inward in the width direction than the inner end of the door stop frame 30A in the width direction as shown in FIG. 2. By forming the rib 12a in this way, in the view from the indoor side direction in the prospective direction, the door stop frame 30A completely overlaps with the rib 12a, and the rib 12a (outer frame 1) conceals the door stop frame 30A, so that the appearance of the sash 100 (see FIG. 1) when viewed from the outdoor side becomes neat.

[0042] The rib 12b is spaced apart from and does not overlap with the door stop frame 30A and the rib 12a in the perspective direction. As described above, the rib 12b is located on the outdoor side of the door stop frame 30A and on the indoor side of the rib 12a. The rib 12b extends inward in the width direction beyond the center line G2 of the door stop frame 30A in the width direction. Since the center line G2 approximately overlaps with the neutral line of the door stop frame 30A as described above, the strength of the outer sash 3 against the load from the indoor side to the outdoor side (out-of-plane direction) with respect to the inner sash 3 (particularly, the door stop frame 30A) can be improved. Also, from the perspective of fire prevention performance, the strength against the energy, force, and impact that deform the outer sash 3 toward the outdoor side due to heat, hot air flow, and blast can be improved, and the fire prevention performance can be improved. Therefore, in order to increase the strength of the inner sash 3 against the load to the outdoor side, it is not necessary to increase the size of the inner sash 3 (for example, increase the size in the perspective direction). In this way, the inner sash 3 can be made self-supporting against the load from the indoor side to the outdoor side, and the strength of the sash 100 is improved to such an extent that deformation such as twisting of the inner sash 3 can be prevented.

[0043] In the present embodiment, the rib 12b extends such that the inner end in the width direction of the rib 12b is at the same position as the inner end in the width direction of the door stop frame 30A in the width direction, that is, at the same position as the inner end in the width direction of the rib 12a. More specifically, the rib 12b extends such that the inner end in the width direction of the rib 12b and the inner end in the width direction of the door stop frame 30A overlap in the perspective direction.

[0044] Note that the inner end of the rib 12b in the width direction may be located between the center line G2 of the door stop frame 30A and the inner end of the door stop frame 30A in the width direction in the width direction, or may be located further inward in the width direction than the inner end of the door stop frame 30A in the width direction. From the perspective of the design property when viewed from the outdoor side in the prospective direction, it is preferable that the inner end of the rib 12b in the width direction is at the same position as the inner end of the rib 12b in the width direction or is located between the center line G2 of the door stop frame 30A and the inner end of the rib 12b in the width direction in the width direction. By forming the rib 12b in this way, in the view from the indoor side direction in the prospective direction, the rib 12b completely overlaps with the rib 11a, and the rib 12a conceals the rib 12b, so that the appearance of the sash 100 (see FIG. 1) when viewed from the outdoor side becomes neat.

[0045] Note that when it is desired to install a screen door on the sash 100, for example, the screen door may be installed outside the ribs 11a and 12a.

[0046] As shown in FIGS. 2 to 4, the inner frame 4 is a rectangular frame member that is fitted inside the ring of the outer frame 1 in the inner part of the outer frame 1 in the prospective direction and is rectangular when viewed in the prospective direction. The inner frame 4 is formed of a resin such as polyvinyl chloride (PCV), for example. Generally, since the resin has a lower thermal conductivity than the metal material, by disposing the inner frame 4 on the indoor side of the outer frame 1, the heat insulation performance of the sash 100 (see FIG. 2) can be improved. The inner frame 4 may have a hollow structure for improving the heat insulation performance and reducing the weight.

[0047] In FIG. 2, the vertical frames on both the left and right sides of the inner frame 4 are respectively shown as the first vertical inner frame 41 and the second vertical inner frame 42, and the lower horizontal frame of the inner frame 4 is shown as the lower inner frame 43.

[0048] The first vertical inner frame 41 overlaps with the door stop frame 20A when viewed in the prospective direction and is disposed on the indoor side of the door stop frame 20A. The first vertical inner frame 41 overlaps with the inner shutter 3 when viewed in the width direction. The second vertical inner frame 42 overlaps with the door stop frame 30A when viewed in the prospective direction and is disposed on the indoor side of the door stop frame 30A.

[0049] The inner end portion of the first vertical inner frame 41 in the width direction is located on the inner side in the width direction beyond the center line G1 of the door stop frame 20A in the width direction. Thereby, the strength of the outer shutter 2 against the in-plane direction (indoors side) load on the outer shutter 2 (particularly, the door stop frame 20A) can be improved.

[0050] The inner end portion of the second vertical inner frame 42 in the width direction is located on the inner side in the width direction beyond the center line G2 of the door stop frame 30A in the width direction. Thereby, the strength of the outer shutter 2 against the in-plane direction (indoors side) load on the inner shutter 3 (particularly, the door stop frame 30A) can be improved.

[0051] The inner end portion of the first vertical inner frame 41 in the width direction and the inner end portion of the second vertical inner frame 42 in the width direction are each located at the same position as the inner end portions of the door stop frame 20A and the door stop frame 30A in the width direction in the width direction. Thereby, in the view from the indoor side direction in the prospective direction, the first vertical inner frame 41 and the second vertical inner frame 42 completely overlap the door stop frame 20A and the door stop frame 30A respectively, and the door stop frame 20A and the door stop frame 30A conceal the first vertical inner frame 41 and the second vertical inner frame 42, so that the appearance seen from the outdoor side of the sash 100 (see FIG. 1) becomes neat.

[0052] The lower inner frame 43 is disposed on the indoor side of the lower frame 13. In the present embodiment, it is connected to the indoor side end portion of the lower frame 13. At the outdoor side end portion of the lower inner frame 43, a lower inner frame rib 43c extending upward along the extending direction of the lower frame 13 is formed. The lower inner frame rib 43c is provided adjacent to the lower rib 13c on the indoor side of the lower rib 13c and constitutes the rail L2 together with the lower rib 13c.

[0053] The window frame heat insulating material 6 is a heat insulating material such as resin, rubber, or wood formed in a sponge shape, cotton shape, porous shape, etc. The window frame heat insulating material 6 is arranged so as to surround the outer periphery of the outer frame 1 or the inner frame 4. At this time, the window frame heat insulating material 6 may be in a state of being embedded in the wall portion 200. The window frame heat insulating material 6 may be arranged in contact with the outer peripheral surface of the outer frame 1 or the inner frame 4. Further, the window frame heat insulating material 6 may be arranged on the indoor side of the outer frame 1. Thereby, the heat insulating performance of the sash 100 (see FIG. 2) can be improved.

[0054] As described above, it is possible to provide a sash that improves the strength of the shoji against the load to the outdoor side without increasing the size of the shoji.

[0055] 〔Alternative Embodiment〕 (1) In the above embodiment, the case where the ribs 11a and 12b overlap with the door stop frames 20A and 30A in the prospective direction of the outer frame 1 has been described. However, it is not essential that both the rib 11a and the rib 12b overlap with the door stop frame 20A and the door stop frame 30A, respectively. It is sufficient that the rib 11a and the door stop frame 20A, or the rib 12b and the door stop frame 30A overlap.

[0056] (2) In the above embodiment, the case where the ribs 11a and 12b overlap with the door stop frames 20A and 30A in the prospective direction of the outer frame 1, and the ribs 11a and 12b extend beyond the center lines G1 and G2 of the door stop frames 20A and 30A in the width direction has been described. However, it is not essential that both the rib 11a and the rib 12b extend beyond the center lines G1 and G2, respectively. It is sufficient that the rib 11a or the rib 12b extends beyond the center line G1 or the center line G2.

[0057] (3) In the above embodiment, the case where the rib 12b overlaps with the door stop frame 30A in the prospective direction of the outer frame 1, and the rib 12b extends beyond the center line G2 of the 30A in the width direction has been described. And it has been explained that thereby, the strength of the outer shoji against the load from the indoor side to the outdoor side (out-of-plane direction) with respect to the inner shoji 3 (particularly, the door stop frame 30A) can be improved.

[0058] In the above-described embodiment, further, when it is desired to improve the strength of the outer sash 3 against a load from the outdoor side to the indoor side (out-of-plane direction) with respect to the inner sash 3 (particularly, the inner meeting rail 30B), as shown in FIGS. 8 and 9, a reinforcing member 8 may be disposed on the indoor side of the inner sash 3. By disposing the reinforcing member 8, it is possible to improve the strength of the outer sash 3 against a load from the outdoor side to the indoor side (out-of-plane direction) without increasing the size of the inner meeting rail 30B in the expected direction. The reinforcing member 8 may be formed of a metal material or a resin material, but from the viewpoint of heat insulation, it is preferably formed of a resin material such as polyvinyl chloride. That is, if the reinforcing member 8 is formed of a resin material, the heat insulation of the sash 100 can also be improved.

[0059] The reinforcing member 8 may be disposed, for example, along the inner meeting rail 30B on the indoor side of the inner meeting rail 30B. In this case, the reinforcing member 8 may be overlapped with the inner meeting rail 30B in the expected direction. By overlapping in this way, the strength of the outer sash 3 against a load from the outdoor side to the indoor side (out-of-plane direction) is appropriately improved.

[0060] Furthermore, in the view from the indoor side direction in the expected direction, the reinforcing member 8 may be completely overlapped with the inner meeting rail 30B, and in the view from the outdoor side direction in the expected direction, the meeting rail 30B may be completely overlapped with the reinforcing member 8. That is, when looking from one side to the other side in the expected direction, the reinforcing member 8 and the meeting rail 30B may be overlapped so as to hide each other. Thereby, the design property of the sash 100 in the view in the expected direction is improved.

[0061] The reinforcing member 8 may be brought into contact with the indoor side surface of the inner sash frame 30B and fixed to the frame 30B by adhesion, screwing, etc. (see Fig. 8). Further, in order to suppress heat transfer from the inner sash frame 30B to the reinforcing member 8 and improve heat insulation performance, the reinforcing member 8 may be arranged along the indoor side of the inner sash frame 30B and spaced apart from the inner sash frame 30B to provide a gap between the reinforcing member 8 and the inner sash frame 30B (see Fig. 9). When a gap is provided between the reinforcing member 8 and the inner sash frame 30B, the upper and lower end portions of the reinforcing member 8 may be fixed to the outer frame 1 via the outer frame 1 or the inner frame 4. Fig. 9 shows a case where the upper and lower end portions of the reinforcing member 8 are fixed to the outer frame 1 via the inner frame 4.

[0062] The reinforcing member 8 may have a hollow structure, but as shown in Figs. 8 and 9, it may be composed of a resin-made cylindrical outer cylinder portion 81 and a skeleton 82 formed of a metal material or the like inserted into the cylinder of the outer cylinder portion 81.

[0063] (4) In the above embodiment, the case where the sash 100 includes the window frame heat insulating material 6 has been described. However, in this embodiment, the addition of heat insulating materials other than the window frame heat insulating material 6 to the sash 100 is not excluded.

[0064] For example, as shown in FIG. 10, the sash 100 may further include a frame heat insulating material 7 disposed on the indoor side in the prospecting direction with respect to the shoji S of the outer frame 1. As the frame heat insulating material 7, for example, a heat insulating material such as resin, rubber, or wood formed in a sponge shape, cotton shape, porous shape, etc. may be used. The frame heat insulating material 7 may be solid or may have a hollow structure. Note that FIG. 10 is a horizontal cross-sectional view of the same cross-sectional position as FIG. 2 when the sash 100 includes the frame heat insulating material 7. In this case, as shown in FIG. 11, the frame heat insulating material 7 may be overlapped with the lower frame 20C in the prospecting direction of the outer frame 1. Alternatively, as shown in FIG. 12, the frame heat insulating material 7 may be overlapped with the lower frame 30C in the prospecting direction of the outer frame 1. In FIGS. 10 and 11, the frame heat insulating material disposed on the indoor side of the lower frame 20C of the outer shutter 2 is shown as the outer shutter side frame heat insulating material 71, and in FIGS. 10 and 12, the frame heat insulating material disposed on the indoor side of the lower frame 30C of the inner shutter 3 is shown as the inner shutter side frame heat insulating material 72. Note that FIGS. 11 and 12 are respectively the cross-sectional views taken along the line XI-XI and XII-XII shown in FIG. 10. In FIG. 11, the illustration of the portions other than the cross-section (the members visible in the depth direction of the arrow view) is omitted except for the inner shutter 3. In FIG. 12, the illustration of the portions other than the cross-section (the members visible in the depth direction of the arrow view) is omitted.

[0065] The outer sash side frame heat insulating material 71 may be fixed on the lower frame 13, for example, on the lower inner frame 43 or the cover 5 by fitting or the like. FIG. 11 shows a case where the outer sash side frame heat insulating material 71 is placed on the lower inner frame 43 and the cover 5. In the example shown in FIG. 11, a groove 71a along the width direction is provided at the lower part of the outer sash side frame heat insulating material 71, and the case where the rail L2 is fitted into this groove 71a to fix the outer sash side frame heat insulating material 71 is illustrated. In this way, by arranging and fixing the outer sash side frame heat insulating material 71 on the lower frame 13 (in FIG. 11, in a state of abutting on the upper surfaces of the lower inner frame 43 and the cover 5) and on the indoor side of the lower frame 20C in the prospective direction, the gap between the lower frame 20C, the lower inner frame 43, and the cover 5 is narrowed, and air leakage (inflow or outflow) in the prospective direction passing through this gap is inhibited, and the heat insulation property of the sash 100 can be improved. Further, heat transfer and heat radiation from the lower frame 13, the lower inner frame 43, the cover 5, and the lower frame 20C can be inhibited, and the heat insulation property of the sash 100 can be improved.

[0066] The inner sash side frame heat insulating material 72 may be fixed on the lower frame 13, for example, on the lower inner frame 43 or the cover 5 by fitting or sandwiching. FIG. 12 shows a case where the inner sash side frame heat insulating material 72 is sandwiched and fixed between the lower inner frame 43 and the cover 5 and the lower frame 30C. In the example shown in FIG. 12, a groove 72a along the width direction is provided at the lower part of the inner sash side frame heat insulating material 72, and the case where the rail L2 is fitted into this groove 72a to ensure the fixation of the inner sash side frame heat insulating material 72 is illustrated. In this way, by sandwiching and fixing the inner sash side frame heat insulating material 72 between the lower frame 13 (in FIG. 12, on the lower inner frame 43 and the cover 5) and the lower frame 30C, the gap below the lower frame 30C, for example, the air leakage (inflow or outflow) in the prospective direction passing through the gap between the lower frame 13 (in FIG. 12, the lower inner frame 43 and the cover 5) and the lower frame 30C is inhibited, and the heat insulation property of the sash 100 can be improved. Further, heat transfer and heat radiation from the lower frame 13, the lower inner frame 43, the cover 5, and the lower frame 30C can be inhibited, and the heat insulation property of the sash 100 can be improved.

[0067] It is more preferable to form a heat insulating rib 72b that extends upward from the indoor-side end on the inner sash side frame heat insulating material 72. When this heat insulating rib 72b is overlapped with the lower frame 30C in the prospective direction, heat transfer in the prospective direction can be inhibited at the lower frame 30C, and the heat insulation performance of the sash 100 can be further improved.

[0068] As shown in FIG. 10, the inner sash side frame heat insulating material 72 is preferably disposed between the door stop frame 30A and the second vertical inner frame 42, or between the door stop frame 30A and the second vertical frame 12. Thereby, the heat insulation performance of the sash 100 is further enhanced.

[0069] As shown in FIGS. 10 to 12, when the outer sash side frame heat insulating material 71 (see FIGS. 10 and 11) and the inner sash side frame heat insulating material 72 (see FIGS. 10 and 12) are fixed by fitting or sandwiching, the outer sash side frame heat insulating material 71 and the inner sash side frame heat insulating material 72 may be detachable. When the outer sash side frame heat insulating material 71 and the inner sash side frame heat insulating material 72 are attached to the sash 100, the sliding movement (opening and closing) of the inner sash 3 becomes impossible. Therefore, there are cases where maintenance such as cleaning of the outdoor surface of the inner sash 3, for example, the outdoor surface of the facing material 35 (see FIGS. 10 and 12), becomes impossible or inconvenient. However, if the outer sash side frame heat insulating material 71 and the inner sash side frame heat insulating material 72 are detachable, the outer sash side frame heat insulating material 71 and the inner sash side frame heat insulating material 72 can be removed in advance when performing the above maintenance to enable maintenance of the outdoor surface of the facing material 35, and the maintainability can be improved. When the outer sash side frame heat insulating material 71 and the inner sash side frame heat insulating material 72 are detachable, it is preferable that the outer sash side frame heat insulating material 71 and the inner sash side frame heat insulating material 72 are formed of flexible rubber or sponge.

[0070] Note that the configurations disclosed in the above embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in other embodiments as long as no contradiction occurs. Also, the embodiments disclosed in this specification are examples, and the embodiments of the present invention are not limited thereto, and can be appropriately modified within the scope not departing from the object of the present invention.

Industrial Applicability

[0071] The present invention can be applied to sashes.

Explanation of Reference Numerals

[0072] 1 Outer frame (window frame) 100 Sash 11 First vertical frame 11a Rib 11t End 12 Second vertical frame 12a Rib (outer rib) 12b Rib (inner rib) 13 Bottom frame 13a Rib 13b Rib 13c Rib 14 Top frame 2 Outer shutter 20 Frame 200 Wall part 20A Door stop frame 20B Outer call frame 20C Bottom frame 21 Outer frame 22 Inner frame 25 Face material 26 Face material 3 Outer shutter 30 Frame 30A Door stop frame 30B Inner call frame 30C Bottom frame 31 Outer frame 32 Inner frame 35 Face material 36 Face material 4 Inner frame (window frame) 41 First vertical inner frame 42 Second vertical inner frame 43 Bottom inner frame 43c Bottom inner frame rib 5 Cover 5b Cover rib 6 Window frame heat insulating material 7 Frame heat insulating material 71 Outer shutter side frame heat insulating material 71a Groove 72 Shutter side frame heat insulating material 72a groove 72b heat insulating material rib 8 reinforcing material 81 outer cylinder part 82 framework L1 rail L2 rail S shoji

Claims

1. A rectangular window frame and a pair of shoji screens that fit inside the ring of the window frame and slide in the finding direction to be misaligned, comprising: When the shoji screen is in the closed state, the shoji screen has a face material and a door stop frame fixed to the outside of the face material in the finding direction on the outer periphery of the face material, the window frame has a rib extending inward from a side portion of the window frame, in a perspective view of the window frame, the rib and the door stop frame overlap, the rib extends beyond the center of the door stop frame in the finding direction of the window frame, the door stop frame of the inner shoji screen in the pair of shoji screens overlaps with the rib when the inner shoji screen is in the closed state, the rib includes an outer rib and an inner rib that overlap with the door stop frame of the inner shoji screen in the perspective direction, the inner rib is arranged closer to the indoor side than the outer rib in the perspective direction, the outer rib and the inner rib are sashes arranged outside the door stop frame of the inner shoji screen toward the outdoor side.

2. The sash according to claim 1, wherein in a view from the indoor side direction in the perspective direction of the window frame, the door stop frame is completely overlapped with the rib and hidden.

3. The sash according to claim 2, wherein in a perspective view of the window frame, an end portion of the rib on the inner side in the finding direction and an end portion of the door stop frame on the inner side in the finding direction overlap.

4. The sash according to any one of claims 1 to 3, wherein the door stop frame of the outer shoji screen in the pair of shoji screens overlaps with the rib when the outer shoji screen is in the closed state.

5. The sash according to any one of claims 1 to 4, wherein in a view from the indoor side direction in the perspective direction, the inner rib is completely overlapped with the outer rib and hidden.

Images